County ProfileNM
Sierra County
Population: 11,576 · 9 ZIP codes
Demographics
Source: U.S. Census Bureau (ACS/Decennial). Estimates vary by year.
People
Total population
11,576
People
Median age
57.6
Housing
Total households
5,440
Income
Median household income
$41,600
Housing
Total housing units
8,200
Employment
Employment rate
35.9%
Education
Bachelor’s degree or higher
17%
Healthcare
Insured population
95.9%
County details
Local time 00:49:35(MT)| Name | Sierra |
|---|---|
| Total ZIP codes | 9total |
| ZIP codes (by type) | 8 Standard1 PO Box |
| Area code | 575 |
| Timezone | Mountain Time (MT) |
| Coordinates | 33.1194684, -107.1881612 |
| Land area | 4,181.2 sq miles(10,829.3 km²) |
Map of Sierra county, New Mexico with ZIP codes
Cities and Communities in Sierra County
Compare the largest cities in Sierra County by population, median income, and growth. Use the table below to analyze key demographic shifts across the region.
| City | Population | Median incomeHousehold | ZIP codes |
|---|---|---|---|
| Truth or Consequences | 6,052 | $33,788 | 1ZIPs |
| Elephant Butte | 1,447 | $53,482 | 1ZIPs |
| Williamsburg | 462 | $29,250 | 1ZIPs |
| Arrey | 296 | — | 1ZIPs |
| Hillsboro | 140 | — | 1ZIPs |
| Monticello | 107 | — | 1ZIPs |
| Caballo | 77 | — | 1ZIPs |
| Derry | 50 | — | 1ZIPs |
| Winston | 47 | — | 1ZIPs |
— Data unavailable or suppressed by the U.S. Census Bureau for areas with small sample sizes to protect individual privacy.
ZIP Codes in Sierra County
Review the most populated postal areas across Sierra County. Use the ranking below to compare resident density and demographic scales between the county's major zones.
| ZIP | City | Median incomeHousehold | Population (ZIP) |
|---|---|---|---|
| 87901 | Truth or Consequences | $34,242 | 6,515 |
| 87935 | Elephant Butte | $51,033 | 1,817 |
| 87942 | Williamsburg | $42,308 | 1,040 |
| 87930 | Arrey | $38,085 | 834 |
| 87931 | Caballo | — | 633 |
| 88042 | Hillsboro | $75,137 | 353 |
| 87943 | Winston | — | 235 |
| 87939 | Monticello | — | 107 |
| 87933 | Derry | — | 50 |
Data Sources & Citations
The geographic and demographic information presented on this site is compiled from publicly available, authoritative sources, including:
- United States Census BureauDemographic, population, housing, and socioeconomic data sourced from Census Bureau datasets, including the Decennial Census and the American Community Survey (ACS).Census Data
- United States Postal Service (USPS)ZIP code classifications, delivery types, and postal designations used for reference purposes. USPS ZIP codes are intended for mail delivery and may not always align exactly with Census geographic boundaries.USPS